Sarah Lynn. (2000). Focus on grammar: An intermediate course for reference and practice (Teacher's manual). White Plains, NY: Pearson Education.
Chicago-tyylinen lähdeviittausSarah Lynn. Focus On Grammar: An Intermediate Course for Reference and Practice (Teacher's Manual). White Plains, NY: Pearson Education, 2000.
MLA-viiteSarah Lynn. Focus On Grammar: An Intermediate Course for Reference and Practice (Teacher's Manual). White Plains, NY: Pearson Education, 2000.
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